Waterproof package.



W. H! DOBLE.

WATERPROOF PACKAGE.

APPLICATION FlLED APR-24,1916.

LMTAQSQ. Patented Nov. 20, 1917.

2 SHEETS-SHEET I.

3 8 LBS 7 LUU FT D MI OUGH w. H. DOBLE. I WATERPROOF PACKAGE. APPLICATIQN FILED APR. 24. 1916.

Patented Nov. 20, 1917.

M a p m n L 1- 4 7w \\\.\Z 7 h O c 2 A E f a ll m E F'Lgli J.

WILLIAM H. DOIBLE, OF QUINCY, MASSACHUSETTS, ASSIGNOR T0 PNEUMATIC SCALE CORPORATION, LIMITED, OF QUINCY, MASSACHUSETTS, A CORPORATION OF MAINE.

' warnareoor rec Specification of Letters Patent.

Patented NOV. 2 11 191?.

To all whom it may concern:

Be it known that 1, WILLIAM H. DOBLE, a citizen of the United States, residing at Quincy, county of Norfolk, State of Massachusetts, have invented a certain new and useful Improvement in W'aterproof Packages, of which the followingis a specification, reference being had therein to the accompanying drawings.

The invention relates to an improvement in paper cartons. It has special reference to the carton in its final condition after it has been filled. One object of the invention is to make a carton of low cost which shall be durable and waterproof and free from holes or cracks. in the paper of which thecarton is composed; alsoto produce a pack age of such character that it has an attractive dress for display purposes in a store and which is ready for delivery to a customer without further wrapping. I

The cartons known previously to my invention have all been lacking in some of those qualities which have been found necessary to fulfil commercial requirements.

It has been customary for many manufacturers to wrap up' the filled package in wax paper for the pu ose of keeping the package from being so1led but this adds substantially to the cost and, moreover, does not satisfactorily perform the function of protecting the package, inasmuch as the wrapper is liable to get loose or to be torn and is never at any time absolutely air and water tight. Cartons made of previously waterproofed paper are undesirable because if the paper is waterproofed before the carton is folded or the flaps sealed the waterproof substance gives to the paper of the cartona character which makes it repellant of the adhesive and the overlying portions cannot be properly glued together. More'- over, even if it should havean aflinity for glue the glue is not waterproof, and thereore the joints would become unsealed by moisture. Furthermore, cartons glued and loosel wrapped in waterproofed paper do not lly meet the requirements because the loose wrapper is easily torn and the air and moisture will enter the package through the torn place as well as through folds. If

it is attempted to seal the joints by the are not satisfactory because the exterior is easily torn, quickly becomes spotted with dirt and cannot be cleaned.

My invention consists of an integral, glued, glazed, waterproof carton.

lhe invention will be fully understood and clearly defined when taken in connection with the accompanying drawings and the novel features will be pointed out and clearly defined in the claims at the close of this specification.

In thedrawings, Figure l is a perspective View of a package embodying the invention.

Fig. 2 is an enlarged sectional View on line 22 of Fig. 1.

Fig. 3 is a plan View of the blank from which the inner shell is formed.

Fig. 4 is a perspective view of the inner shell completely folded and sealed.

Fig. 5 is a perspective view showin the package after the inner shell is comp etely folded and sealed and the outer Wrapping is foldedaround and glued to the sides of the inner shell, the end flaps of the outer wrapping being in the extended position.

Fig. 6 is a section on line 6-6 of Fig. 1.

Referring now to the drawings, the preferred form of package embodying the invention is shown in the drawings. In this form there is an inner shell 1 which may be composed of cheap cardboard and is of rectangular form in cross section, one of the side panels having an inturned lap e lued to the overlying side panel d and eing formed with end closing flaps both at the top and the bottom of well known form of construction. It may be made from a blank cut andscored as shown in Fig. 3. It has the side panel portions a, b, c, d, side sealing lap a, and end closing flaps f, g, h, c at each end. The bottom closing flaps are folded and sealed before the package is filled. After the package is filled the top end forming flaps are folded down and sealed together by glue. The film of glue is represented by 15.

After the top forming flaps are closed and sealed a sheet of paper 4: is wrapped around the package as shown in Fig. 5, and then folded at each end as shown at the top in Fig. 1, said paper covering being glued or otherwise adhesively secured to the package throughout the entire surface of the four side panels and of both ends by a film of adhesive 5. In applying the outer wrapper or shell, it is first folded around the four sides of the inner shell as shown in .Fig. 5 and glued thereto throughout the entire surface of the four panels and the overlapping sides of the wrapper are glued together. The sheet is large enough to have extension portions 6, 7, 8, 9 at each end. These extension portions have adhesive 5 properly applied and are folded to cover the ends of the package. In Fig. 1 there are shown at the top the four flap portions 6, 7, 8, 9 folded in the ordinary manner of folding a wrapper over the end of a rectangular carton but in addition to being folded every portion is glued to the surface with which it contacts. It isnot essential that the end flaps of the paper should be of the exact form shown in the drawings, the form shown being for illustrative purposes only, but whatever form is employed, all contacting parts should be glued together throughout the entire surface. In this form of construction the flap 6 is first turned in, provided with adhesive on its under face and having adhesive connection throughout its entire under face with the top of the paper shell. The flap 7 is also adhesively attached throughout its entire contacting face with the top of the shell. The flap 8 which laps over on to the top of the shell and on to the flaps 6, 7 is adhesively secured throughout its entire under face to the portions of the shell and of the underlying flaps 6, 7 with which it contacts. The outside flap 9 is adhesively secured on its under face to the portions of the shell and of the underlying flaps 6, 7, 8 with which it contacts. If any of the flaps 6, 7 8, 9 are doubled under to form a fold along the miter lines10, 11, 12, 13 said'folded portions should have their contacting faces adhesively secured together throughout.

In the same way the end flaps of the paper folded in at the bottom of the package should be adhesively secured together throughout all contactin surfaces. The package thus made will virtually be a twoply package made integral by the adhesive film between the two plies throughout so that absolutely every contacting portion of the outside paper layer adheres to the inner shell and the portions of the wrapper which contact with each other are adhesively connected throughout. The paper which forms the outside layer may have printed on its outer face whatever advertising matter it is desired shall a pear upon the package when exposed for safe. This may be printed upon the paper blank before it is wrapped around the shell in such location that it will appear on the front panel or any other desired part of the carton after the paper has been attached to the inner shell as shown in Fig. 1. The paper wrapper serves to stiffen and beingstrengthen the carton and it covers all cracks and'holes which may be in the edges and corners of the interior shell.

The package as thus'far formed is then treated to a thin even layer 14 of waterproofing material throughout its entire surface as, for instance, by dipping it all over in paraflin so that the film of parafiin will form an integral, unbroken, glazed, skin coat over every part of the outside surface of the package, including the points where the parts are folded. This covering is moisture proof and transparent and allows the printed matter to show clearly through the film of waterproofing. The entire package can safely be cleaned with a moist cloth, without injuring its appearance in any way.

The improved carton embodying my invention satisfies all the requirements of a strong, waterpoof, readily cleaned carton, which the manufacturers of package goods demand, and lacks the defects of previous cartons. It is integral in all its parts, its end flaps are firmly glued together, and its exterior skin is impervious to 'air and m'oisture and is glazed so that it may be readil cleaned with a wet cloth. The waterproo ing is applied to the filled package, after it is printed, glued, sealed and ready for the market.

As the film of waterproof material is very thin and transparent, and follows the angles of the flaps, the folds and edges of the flaps show through the film as in Fig. 1,

so that in perspective view in the drawlngs it looks as though there were no outside film.

What I claim is:

1. A carton composed of an inner shell and an outer shell, the inner shell forming a complete inclosure and the outer shell being formed of a substantially rectangular blank continuous throughout its whole extent folded about the inner shell, the contacting surfaces of the two shells being adhesively attached throughout their entire extent, the end forming portions being formed with folds adhesively secured to the inner shell and to each other on all contacting surfaces.

2. A carton composed of an inner shell and an outer shell, the inner shell forming a complete inclosure and the outer shell being formed of a substantially rectangular blank continuous throughout its whole extent folded about the inner shell, the contacting surfaces of the two shells being adhesively attached throughout their entire extent, the end forming portions being formed with folds adhesively secured to the inner shell and to,each other on all contacting surfaces, and a skin of waterproof material on the entire outside of the outer shell.

3. A carton composed of an inner shell and an outer shell, the inner shell forming a complete inclosure and the outer shell being formed of a blank continuous throughout its Whole extent folded about the inner shell, said blank being of a shape and size to completely inclose the inner shell when folded, the contacting surfaces of the, two

[0 contacting surfaces and forming an imperforate covering over all sides and corners of the inner shell, and a skin of Waterproof material on the entire outside of the outer shell.

In testimony whereof I afix my signa- 35 ture, in presence of two Witnesses.

WILLIAM H. DOBLE. Witnesses:

ELIZABETH HIGGINS, ETHYL W. MATHESON. 

